Three galaxies, thousands of worlds, four great races watching over them all... and only one species destined to inherit their place. Will the human race be able to attain the Mantle of Responsibility, or will our enemies prevail in destroying us? A massive crossover set shortly after the events of Halo: Infinity (Spartan Ops).

After the Pillar of Autumn escaped leading onto the event that would change the war. the Spartan who made it all possible survived the hell he was left in and has to work with a patchwork Spartan Team in order to survive and get back to Earth. (if something doesn't match the lore, don't yap on, all the answers are in the story)

"Never before had we encountered a race with powers that rivaled our own. Never did we imagine that the sins our past would come to haunt us again. In our overconfidence, we were unprepared and outnumbered." - Melia

The Ancients once ruled the Milky Way until they created the instruments of their downfall: Mankind and the Forerunners. They revolted and claimed the galaxy. Now their Revenge is ravaging their killers, and the children will soon meet their creators.

The war is over, but the Spartans don't know that. Desperate to find a way back into the fight, they inadvertantly stumble across ancient devices, and an alliance so old that no one remembered it ever existed.